import urllib.request
import urllib.parse

def create_request(page):
    base_url = 'http://www.kfc.com.cn/kfccda/ashx/GetStoreList.ashx?op=cname'

    data={
        'cname':'北京',
        'pid':'',
        'pageIndex':page,
        'pageSize':'10'
    }

    data = urllib.parse.urlencode(data).encode('utf-8')

    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36'
    }

    request = urllib.request.Request(url=base_url,headers=headers,data=data)

    return request


def get_content(request):
    response = urllib.request.urlopen(request)
    content = response.read().decode('utf-8')
    return content


def down_load(page,content):
    with open('kfc_'+str(page)+'.json','w',encoding='utf-8') as fp:
        fp.write(content)



if __name__=='__main__':
    start_page = int(input("请输入起始的页码"))
    end_page = int(input("请输入结束的页码"))

    for page in range(start_page, end_page + 1):
        #       每一页都有自己的请求对象的定制
        request = create_request(page)
        #       获取网页源码
        content = get_content(request)
        #       下载
        down_load(page, content)
